The story
- Proto-Indo-European*kʷetwóres
- Proto-Hellenic*kʷétwores
- Ancient Greekτέσσᾰρες (téssăres)
- Ancient Greekτετρᾰ- (tetră-)
- Englishtetra-
- Egyptianjmn
- Ancient GreekᾸ̓́μμων (Ắmmōn)
- LatinAmmōn
- Latinammoniacus
- Englishammonia
- Englishamine
- English todaytetramine
Etymology from Wiktionary, CC BY-SA 4.0.